The Yaza Kumar Stone Inscription at the Bagan Archaeological Museum (fig.). It dates from 1113 AD and is named after Prince Yaza Kumar, the son of King Kyansittha (fig.), who dedicated it to his father's honour. This stone pillar has four faces, each side with an inscription in a different language, namely Pyu, Mon, Burmese and Pali. The stone inscription has scholarly significance because it has allowed for the deciphering of the Pyu language and is an important source of Bagan history.